[llvm] [RISCV] Remove SEW operand for load/store and SEW-aware pseudos (PR #90396)

[Michael Maitland via llvm-commits]

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@@ -223,6 +223,13 @@ class RVInstCommon<dag outs, dag ins, string opcodestr, string argstr,
   // 3 -> widening case
   bits<2> TargetOverlapConstraintType = 0;
   let TSFlags{22-21} = TargetOverlapConstraintType;
+
+  bit HasImplictSEW = 0;
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michaelmaitland wrote:

nit: can you add a comment what it means to have an implicit SEW?

https://github.com/llvm/llvm-project/pull/90396